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author | Wolfgang Denk <wd@denx.de> | 2011-10-28 00:15:19 +0200 |
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committer | Wolfgang Denk <wd@denx.de> | 2011-10-28 00:15:19 +0200 |
commit | 87a5d601031652293ec4b729fdb7ee01bbd940a8 (patch) | |
tree | 91ede3ee45b228736c1876a700024782d7bc2032 /drivers/misc/pmic_i2c.c | |
parent | 606a76f8ef479e42ae4d06f8f3ce87e9a1c72acf (diff) | |
parent | 37fc0ed268dc5acacd3a83adafa26eb1a84e90af (diff) | |
download | u-boot-imx-87a5d601031652293ec4b729fdb7ee01bbd940a8.zip u-boot-imx-87a5d601031652293ec4b729fdb7ee01bbd940a8.tar.gz u-boot-imx-87a5d601031652293ec4b729fdb7ee01bbd940a8.tar.bz2 |
Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
ARM: Add Calxeda Highbank platform
dkb: make mmc command as default enabled
Marvell: dkb: add mmc support
ARM: pantheon: add mmc definition
davinci: remove config.mk file from the sources
ARM:AM33XX: Add support for TI AM335X EVM
ARM:AM33XX: Added timer support
ARM:AM33XX: Add emif/ddr support
ARM:AM33XX: Add clock definitions
ARM:AM33XX: Added support for AM33xx
omap3/emif4: fix registers definition
davinci: remove obsolete macro CONFIG_EMAC_MDIO_PHY_NUM
davinci: emac: add support for more than 1 PHYs
davinci: emac: add new features to autonegotiate for EMAC
da850evm: Move LPSC configuration to board_early_init_f()
omap4_panda: Build in cmd_gpio support on panda
omap: Don't use gpio_free to change direction to input
mmc: omap: Allow OMAP_HSMMC[23]_BASE to be unset
OMAP3: overo : Add environment variable optargs to bootargs
OMAP3: overo: Move ethernet CS4 configuration to execute based on board id
OMAP3: overo : Use ttyO2 instead of ttyS2.
da830: add support for NAND boot mode
dm36x: revert cache disable patch
dm644X: revert cache disable patch
devkit8000: Add malloc space
omap: spl: fix build break due to changes in FAT
OMAP3 SPL: Provide weak omap_rev_string
omap: beagle: Use ubifs instead of jffs2 for nand boot
omap: overo: Disable pull-ups on camera PCLK, HS and VS signals
omap: overo: Configure mux for gpio10
SPL: Add DMA library
omap3: Add interface for omap3 DMA
omap3: Add DMA register accessors
omap3: Add Base register for DMA
arm, davinci: add missing LSPC define for MMC/SD1
U-Boot/SPL: omap4: Make ddr pre-calculated timings as default.
DaVinci: correct MDSTAT.STATE mask
omap4: splitting padconfs into common, 4430 and 4460
omap4: adding revision detection for 4460 ES1.1
omap4: replacing OMAP4_CONTROL with OMAP4430_CONTROL
gplug: fixed build error as a result of code cleanup patch
kirkwood_spi: add dummy spi_init()
gpio: mvmfp: reduce include platform file
ARM: orion5x: reduce dependence of including platform file
serial: reduce include platform file for marvell chip
ARM: kirkwood: reduce dependence of including platform file
ARM: armada100: reduce dependence of including platform file
ARM: pantheon: reduce dependence of including platform file
Armada100: Add env storage support for Marvell gplugD
Armada100: Add SPI flash support for Marvell gplugD
Armada100: Add SPI support for Marvell gplugD
SPI: Add SPI driver support for Marvell Armada100
dreamplug: initial board support.
imx: fix coding style
misc: pmic: drop old Freescale's pmic driver
MX31: mx31pdk: use new pmic driver
MX31: mx31ads: use new pmic driver
MX31: mx31_litekit: use new pmic driver
MX5: mx53evk: use new pmic driver
MX5: mx51evk: use new pmic driver
MX35: mx35pdk: use new pmic driver
misc: pmic: addI2C support to pmic_fsl driver
misc: pmic: use I2C_SET_BUS in pmic I2C
MX5: efikamx/efikasb: use new pmic driver
MX3: qong: use new pmic driver
RTC: Switch mc13783 to generic pmic code
MX5: vision2: use new pmic driver
misc: pmic: Freescale PMIC switches to generic PMIC driver
misc:pmic:samsung Enable PMIC driver at GONI target
misc:pmic:max8998 MAX8998 support at a new PMIC driver.
misc:pmic:core New generic PMIC driver
mx31pdk: Remove unneeded config
mx31: provide readable WEIM CS accessor
MX51: vision2: Set global macros
I2C: Add i2c_get/set_speed() to mxc_i2c.c
ARM: Update mach-types
devkit8000: Add config to enable SPL MMC boot
devkit8000: protect board_mmc_init
arm, post: add missing post_time_ms for arm
cosmetic, post: Codingstyle cleanup
arm, logbuffer: make it compileclean
tegra2: Enable MMC for Seaboard
tegra2: Add more pinmux functions
tegra2: Rename PIN_ to PINGRP_
tegra2: Add more clock functions
tegra2: Clean up board code a little
tegra2: Rename CLOCK_PLL_ID to CLOCK_ID
Diffstat (limited to 'drivers/misc/pmic_i2c.c')
-rw-r--r-- | drivers/misc/pmic_i2c.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/misc/pmic_i2c.c b/drivers/misc/pmic_i2c.c new file mode 100644 index 0000000..ad55d64 --- /dev/null +++ b/drivers/misc/pmic_i2c.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2011 Samsung Electronics + * Lukasz Majewski <l.majewski@samsung.com> + * + * (C) Copyright 2010 + * Stefano Babic, DENX Software Engineering, sbabic@denx.de + * + * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <linux/types.h> +#include <pmic.h> +#include <i2c.h> + +int pmic_reg_write(struct pmic *p, u32 reg, u32 val) +{ + unsigned char buf[4] = { 0 }; + + if (check_reg(reg)) + return -1; + + switch (pmic_i2c_tx_num) { + case 3: + buf[0] = (val >> 16) & 0xff; + buf[1] = (val >> 8) & 0xff; + buf[2] = val & 0xff; + break; + case 1: + buf[0] = val & 0xff; + break; + } + + if (i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num)) + return -1; + + return 0; +} + +int pmic_reg_read(struct pmic *p, u32 reg, u32 *val) +{ + unsigned char buf[4] = { 0 }; + u32 ret_val = 0; + + if (check_reg(reg)) + return -1; + + if (i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num)) + return -1; + + switch (pmic_i2c_tx_num) { + case 3: + ret_val = buf[0] << 16 | buf[1] << 8 | buf[2]; + break; + case 1: + ret_val = buf[0]; + break; + } + memcpy(val, &ret_val, sizeof(ret_val)); + + return 0; +} + +int pmic_probe(struct pmic *p) +{ + I2C_SET_BUS(p->bus); + debug("PMIC:%s probed!\n", p->name); + if (i2c_probe(pmic_i2c_addr)) { + printf("Can't find PMIC:%s\n", p->name); + return -1; + } + + return 0; +} |